1 files changed, 91 insertions, 0 deletions
diff --git a/lib/private/Preview/GeneratorHelper.php b/lib/private/Preview/GeneratorHelper.php
new file mode 100644
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+++ b/lib/private/Preview/GeneratorHelper.php
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+<?php
+/**
+ * @copyright Copyright (c) 2016, Roeland Jago Douma <roeland@famdouma.nl>
+ *
+ * @author Roeland Jago Douma <roeland@famdouma.nl>
+ *
+ * @license GNU AGPL version 3 or any later version
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+namespace OC\Preview;
+
+use OC\Files\View;
+use OCP\Files\File;
+use OCP\Files\IRootFolder;
+use OCP\Files\SimpleFS\ISimpleFile;
+use OCP\IImage;
+use OCP\Image as img;
+use OCP\Preview\IProvider;
+
+/**
+ * Very small wrapper class to make the generator fully unit testable
+ */
+class GeneratorHelper {
+
+	/** @var IRootFolder */
+	private $rootFolder;
+
+	public function __construct(IRootFolder $rootFolder) {
+		$this->rootFolder = $rootFolder;
+	}
+
+	/**
+	 * @param IProvider $provider
+	 * @param File $file
+	 * @param int $maxWidth
+	 * @param int $maxHeight
+	 * @return bool|IImage
+	 */
+	public function getThumbnail(IProvider $provider, File $file, $maxWidth, $maxHeight) {
+		list($view, $path) = $this->getViewAndPath($file);
+		return $provider->getThumbnail($path, $maxWidth, $maxHeight, false, $view);
+	}
+
+	/**
+	 * @param File $file
+	 * @return array
+	 * This is required to create the old view and path
+	 */
+	private function getViewAndPath(File $file) {
+		$owner = $file->getOwner()->getUID();
+
+		$userFolder = $this->rootFolder->getUserFolder($owner)->getParent();
+
+		$nodes = $userFolder->getById($file->getId());
+		$file = $nodes[0];
+
+		$view = new View($userFolder->getPath());
+		$path = $userFolder->getRelativePath($file->getPath());
+
+		return [$view, $path];
+	}
+
+	/**
+	 * @param ISimpleFile $maxPreview
+	 * @return IImage
+	 */
+	public function getImage(ISimpleFile $maxPreview) {
+		return new img($maxPreview->getContent());
+	}
+
+	/**
+	 * @param $provider
+	 * @return IProvider
+	 */
+	public function getProvider($provider) {
+		return $provider();
+	}
+}